CN107534299B - The error protection power configuration of system is managed for distributed power generation - Google Patents
The error protection power configuration of system is managed for distributed power generation Download PDFInfo
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- CN107534299B CN107534299B CN201680024663.4A CN201680024663A CN107534299B CN 107534299 B CN107534299 B CN 107534299B CN 201680024663 A CN201680024663 A CN 201680024663A CN 107534299 B CN107534299 B CN 107534299B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/30—State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Embodiment may include a kind of method of output level that cutting down EG systems.The method may include receiving the first dynamic control signal at processor.First dynamic control signal may include the instruction for the output level of EG systems to be adjusted to the first output level.The method may also include is maintained at first output level up to predetermined amount of time by the output level of the EG systems.The method may also include determines the second dynamic control signal whether is received during the predetermined amount of time by the processor.If being not received by the second dynamic control signal during the predetermined amount of time, the method, which may include realizing after the period, is declined the output level with set rate before error protection output level.Predetermined failure can be kept to protect output level, until the processor receives third dynamic control signal.
Description
Cross reference to related applications
The disclosure requires the priority U.S. non-provisional application No.14/697 that submits on April 27th, 2015,353 equity,
The entire disclosure of this application is incorporated herein by reference for all purposes.
Background technology
Energy production (EG) system can be the part of distributed generation system, in distributed generation system, several EG
System is distributed in house, commercial and industrial electricity consumption consumer.This EG systems may include photovoltaic, solar heat and wind
Power technology.Needed for energy production is more than load in the case of energy, it may appear that excessive electrical generation situation.All excess energies are sent out
It may be infeasible for power grid to be sent to power grid, may be unable to get regulation permission, or may damage setting in power grid
It is standby.In order to avoid excessive electrical generation situation, control server can send control message to EG systems in real time.Because of point of electricity generation system
Cloth characteristic, control server can not be located at same website with EG systems, and controlling server can be by network and EG systems
Communication.The control message for issuing EG systems may include the instruction of the energy production output level for adjusting EG systems.Using too
Positive energy photovoltaic EG systems, can be special with the power points of the photovoltaic DC-to-AC converter of photovoltaic panel electric coupling or other electricity by tuning
Property adjusts energy production output level.The process for reducing energy production output is referred to as cutting down (curtailment).Normal
Under operation, the output of EG systems may repeatedly be cut down in one day.However, if EG systems lose and control the logical of server
Letter, then EG systems will not receive new control message, as a result, EG systems cannot adjust the output of its energy, so as to cause
Excessive electrical generation situation.Technology described herein be directed to distributed generation system in communication failure cause problem and with distribution
The associated other problems of formula electricity generation system.
Invention content
The embodiment of this technology allows distributed generation system in response to the communication loss between its subsystem.It is distributed
Energy production (EG) system in electricity generation system can adjust its output by by control mode, thus compared with historical data, in mesh
Mark avoids plant issue while being targeted by EG system effectivenesies.The cost effect of distributed generation system also can be improved in this technology
Rate, reliability and safety, so as to make distributed generation system and energy production system have more consumer and Utilities Electric Co.
Attraction.
Embodiment may include a kind of method of energy production output level that cutting down EG systems.The method may include locating
It manages and receives the first dynamic control signal at device.First dynamic control signal may include for the energy production of EG systems is defeated
Go out instruction of the Level tune at the first energy production output level.The method may also include the energy production of the EG systems
Output level is maintained at the first energy production output level and reaches predetermined amount of time.The method may also include by the processing
Device determines that the second dynamic control signal whether is received during the predetermined amount of time.If in the predetermined amount of time phase
Between be not received by the second dynamic control signal, then the method may include making after the period output level with
Set rate declines, until reaching error protection output level.The error protection output level can be maintained, until described
Until processor receives third dynamic control signal.
Embodiment may include a kind of method of error protection output level that realizing EG systems.The method may include receiving
First control signal.The first control signal may include the instruction of the output level for changing EG systems.The method is also
It may include whether determination receives second control signal during predetermined amount of time.If after the first control signal
The second dynamic control signal is not received by during the predetermined amount of time, then the method may include in the predetermined amount of time
The output level is set to decline with set rate later, until reaching error protection output level.The method can also wrap
It includes and maintains the error protection output level, until receiving third signal.
Embodiment may include a kind of distributed power generation management system.The system may include gateway, control server and energy
Measure generation system.The EG systems can be configured to receive the instruction from the control server by the gateway.It is described
Instruction may include the instruction of the energy production output level for adjusting the EG systems.If the EG systems are in the predetermined time
It is not received by described instruction in section, the EG systems can be configured to make the energy production output level centainly to descend reduction of speed
Rate declines, until reaching scheduled error protection output level.
Description of the drawings
Fig. 1 is the simplified block diagram of system environments according to the embodiment.
Fig. 2 is the EG system outputs according to the embodiment in response to receiving and not receiving different control messages and time
Curve graph.
Fig. 3 is the block flow diagram of the method according to the embodiment for adjusting EG system output levels.
Fig. 4 is the block flow diagram of the method according to the embodiment for adjusting EG system output levels.
Fig. 5 is the EG system outputs according to the embodiment for being directed to two different holding activity output level scenes and time
Curve graph.
Fig. 6 is the EG system outputs according to the embodiment for being directed to two different holding activity output level scenes and time
Curve graph.
Fig. 7 A to Fig. 7 C are the energy production according to the embodiment being connect with utility network and storage (EGS) system and energy
The diagram of generation system.
Fig. 8 is the simplified block diagram of computer system according to the embodiment.
Specific implementation mode
Distributed generation system may include energy production (EG) system with control server communication.Controlling server can be to
EG systems send instruction, in response to generating horizontal and the part of load requirement or the information of full electric network range about real-time power
And increase or decrease energy production output.Under normal operation, EG systems will be adjusted based on the instruction from control server
Energy production exports.However, EG systems can lose and control the communication of server.In these cases, if EG systems can not
Change energy production output level, then the equipment for the owner of EG systems can be caused impaired or cost increase.This technology
Embodiment allow distributed generation system with beneficial manner without any confusion in response to communication loss, to keep equipment impaired
Or the risk minimization of expense occurs.
It may include intentionally stopping energy production in a step-wise fashion or be cut down in response to the conventional method of communication loss
To lower output level, in some instances it may even be possible to reach the output level of zero energy generation.Optional relatively low output level can emit
Not low enough the risk being damaged to avoid equipment to insufficient or expense occurs of output level.On the other hand, arbitrary lower defeated
Go out it is horizontal can also risk the too low risk of output level, be than required more from power grid to force EG system owners
Electric power pays expense.Arbitrary output level after communication loss is in the too high risk of output level and the too low wind of output level
It is unable to fully balance between danger.The problem of along with arbitrary output level, the rate of change of output level during communication loss
It is problematic.Legacy system can be instantaneous after communication loss or output level is almost instantaneously reduced to relatively low output water
It is flat.Power equipment in energy production system, distributed generation system or power grid manipulates the uncontrolled decline of output level
The robustness of (ramp down) is insufficient.When the hundreds of or thousands of synchronous energy generation systems for considering to may include being connected with power grid
Distributed generation system when, relatively low output level and output rate of change the problem of be amplified.With being isolated for EG system
Power decline compare, it is larger that the power of many systems simultaneously declines the possibility for keeping equipment impaired.In fact, selection is non-optimal
Relatively low output will increase that output level is too high or the degree of too low problem.
Fig. 1 instantiates the simplified block diagram of the system environments 100 according to the embodiment of this technology.As shown, system ring
Border 100 includes the energy production and storage (EGS) system 102 being mounted at website 104 (for example, house, commercial establishment etc.).
EGS systems 102 include：Energy production subsystem based on PV comprising PV inverters 106 and one or more PV panels 108；
And the energy stores subsystem based on battery comprising battery inverter/charger 110 and cell apparatus 112.In some realities
It applies in example, PV inverters 106 and battery inverter/charger 110 can be combined into single device.As then discussed, battery
Inverter/charger 110 and cell apparatus 112 are optional components.In the example of fig. 1, EGS systems 102 are connect with power grid；
Therefore, PV inverters 106 and battery inverter/charger 110 are via main panel 116 and public ammeter 118 and utility network 114
Electrical connection.In addition, in order to provide electric power, utility network 114, photovoltaic DC-to-AC converter 106 and battery inverter/charging to website 104
Device 110 is electrically connected with crucial website load 120 and non-key website load 122.Although being not shown in Fig. 1, this technology
Embodiment may include multiple websites, wherein each website can be similar to website 104.This multiple website can for example form public affairs
With the sub-component of the micro-capacitance sensor of power grid, campus, distribution feeder or bigger.This multiple website can connect with one or more site gateways
It connects.
The centralized management of the EGS systems of such as system 102 may be highly difficult, especially big needed for house and commercial market
Scale land management management.In order to make reply to this, system environments 100 may include site gateway 124 and control server 128.It stands
Point gateway 124 is mounted in the computing device at website 104 (for example, general purpose personal computer, special dress as shown in Figure 5
It sets).As shown, site gateway 124 is serviced via network 126 and live component 106,110,112 and 118 and control
Device 128 is coupled in communication.In one embodiment, site gateway 124 can be the self-contained unit detached with EGS systems 102.At it
In his embodiment, site gateway 124 can be embedded into or be integrated into the one or more components of system 102.In addition, site gateway
124 can be coupled in communication with one or more EGS systems 102.For example, in house setting, site gateway 124 can be proximity
The single gateway in domain.Control server 128 is server computer (or cluster/portion of server computer far from website 104
It falls).Controlling server 128 can be by such as the installation side of EGS systems 102 or service provider, Utilities Electric Co. or some other reality
Body operates.
In one embodiment, site gateway 124 and control server 128 can perform the property for monitoring EGS systems 102
The various tasks of energy.For example, site gateway 124 collects (such as, the life (via PV inverters 106) of system operatio statistical information
At the amount of PV energy, (via public ammeter 118) inflow and outflow utility network energy, be stored in cell apparatus 112
Amount of energy, etc..Then, site gateway 124 can transmit this data to control server 128, to carry out long-term record
And system performance analysis.
Importantly, site gateway 124 and control server 128 can serial operation, to actively instigate EGS systems
102 deployment and control.Specifically, show can be with other entities of the separate website of EGS system communications (outside website by Fig. 1
132).These other entities include web server 180, database server 182 and third-party server 130.Third party's service
Device can be the source of set-point (for example, initial level, holding activity time, fall off rate and error protection rank).It is possible
The example of third-party server is Utilities Electric Co. or other grid operators.
According to embodiment, can be realized involved in power management by using electrical management message bus system (MBS)
(for example, between various devices at centerized fusion server and remote site, and/or centerized fusion between various elements
Between various other remote-control devices such as server 128 and database server, web server) communication.MBS, which is utilized, to disappear
Breath bus server 198 and messaging bus client 199 at site gateway are realized.In Fig. 1, messaging bus service
Device is shown as on control server 128, but this is not required, and in some embodiments, messaging bus server can
On a separate machine and/or in a part for individual server cluster.It is interim that the additional detail of system 100 is found in the U.S.
Apply No.62/078,336, this application is incorporated herein by reference for all purposes.
Embodiment may include no battery inverter/charger 110 and without the system of cell apparatus 112, to make
EGS systems become energy production (EG) system.Crucial website load 120 and non-key website load 122 can be that consumption comes from
The device of PV panels 108 or electric power from utility network 114.The load requirement of website 104 will be different within a whole day.
Under typical operating conditions, it controls server 128, site gateway 124, ammeter 118 and EGS systems 102 to be communicated, with control
The output level of EGS systems processed.For example, if EGS systems 102 are just being generated than loading required more electric power, website 104 will have
There is excess power, it may be desirable to which electric power is sent to utility network 114.When the flow of power from power grid to website is less than grid operator
When specified value, this is excessive electrical generation situation.For example, Utilities Electric Co. can be arranged what they can receive from distributed generation system
, then there is excessive electrical generation situation in the certain restrictions of energy reflux, and the limitation if more than.In another example, electric
The meeting of power company if violating the constraint, occurs excessive it is desirable to keep that minimum forward power to distributed generation system
Electricity generation situation.
For example, EG systems can use house solar energy to generate than loading required more electric power in certain times.The sun is strong
Degree is typically highest on daytime, but corresponding residential load will not be very high, because resident may go to work, rather than at home
Consume electric power.In some cases, excess power may be sent to that power grid 114, but in other circumstances, excess power can not
It is sent to power grid 114.Power rule of law can be directed to the excess power sent to power grid and collect the charges, or can will send back power grid
The amount of excess power bind.Electronic equipment in power grid may not handle the substantially reverse flow of electrical power for returning to power grid.
In order to avoid these and other problems, control server 128 can send signal by gateway 124 to EGS systems 102, to cut down
Generated electric power.Using solar energy photovoltaic system, the electrical efficiency of PV inverters 106 is adjusted, to reduce generated electric power.
The electric power generated is reduced intentionally in this way or the like to be referred to as cutting down.
In some cases, EGS or EG systems can lose and gateway, network and/or the communication for controlling server.Including setting
Many possible causes of standby failure, network flow and network down time can cause to lose communication.Technology described herein is permissible
It is responded to losing communication, without causing high cost, extremely low efficiency and/or will not drastically being led very much since electric power reduces
Cause equipment impaired.
Fig. 2 and Fig. 3 show the embodiments of this technology.Fig. 2 shows what is exported before and after, during losing communication
The graphical representation of EG systems.Fig. 3 instantiates the block flow diagram of the method 300 for the energy production output level for cutting down EG systems.
EG systems may include a photovoltaic DC-to-AC converter or multiple photovoltaic DC-to-AC converters.Normally, EG systems are serviced from control at certain intervals
Device receives dynamic control message.Because of bandwidth problem, EG systems will not constantly be communicated with control server, and alternatively, it can example
Such as every 3 seconds to 10 seconds reception dynamic control message.Interval between dynamic control message can be as short as 100 milliseconds, or be
15 minutes to 30 minutes.In fig. 2, EG systems receive control message c0, control message c0Cause EG systems initially to export water
Flat 202 output.Method 300 may include the energy production output level of EG systems being maintained at initial output level 302.It can volume production
Raw output level can refer to power level, reactive power, energy, electric current, voltage, efficiency or battery discharge/charge power value
Size.
By after some times, method 300 may include receiving at processor under energy production output level before
First control message 304.Processor can be with inverter electric coupling.First control message can be the first control shown in Figure 2
Message c1, and the first dynamic control signal can be described as.
As shown in Figure 2, the first control message may include for the energy production of energy production (EG) system to be exported water
The flat dynamic instruction for being adjusted to holding activity output level 204.Holding activity output level 204 can be equal to or can be not equal to initial
Output level 202.Holding activity output level 204 can enable the corresponding load during EG system over-matching electricity generation situations want
It asks.In embodiment, holding activity output level 204 can enable EG systems match corresponding load requirement and additional margin it
With.Additional margin can indicate that Utilities Electric Co. allows the excess power that will send back power grid.In some embodiments, holding activity is defeated
It may not be constant, but transformable to go out level.These variations can be scheduled, without coming from control server
Additional control message.
Method 300, which may also include, to be maintained holding activity output level 204 by the energy production output level of EG systems and reaches
Predetermined amount of time 306.As benefit from the disclosure those skilled in the art will appreciate that, the predetermined amount of time can be appoint
What suitable period.In some of the exemplary embodiments, the predetermined amount of time can between 1 second and 20 seconds, 3 seconds and 10 seconds it
Between, 2 seconds and between 5 seconds or between 4 seconds and 9 seconds.During the holding activity output level 204, EG systems can lose and control
The communication of server.
Method 300 may also include determines the second control message whether is received during predetermined amount of time by processor.
If processor receives the second control message (for example, the c in Fig. 2 during predetermined amount of time2), then method 300 may include
The energy production output level of EG systems is adjusted to new energy production output level 310.
If being not received by the second control message during predetermined amount of time, method 300 may include in the predetermined time
Energy production output level 312 is reduced with set rate after section, until reaching scheduled error protection output level.In Fig. 2
In, the second control message can be control message c2, and it is lower reduction of speed that the decline of energy production output, which is by being marked in curve,
What the part of rate " illustrated.Fig. 2 also shows scheduled error protection output level 206.
Scheduled error protection output level 206 can be based on historic load requirement.Historic load required value can be one day
In time or 1 year in average or minimum historic load requirement in one day.Historic load requires to can come from last year, previous
The load requirement of the same time in week or the previous day.For example, scheduled error protection output level 206 can be configured to timing
Between or the percentage that is required to the average of settled date or minimum historic load.The percentage can be the minimum history of such as this day
80%, 85%, 90%, 95% or the 100% of load requirement.More multi-load, which is integrated into the calculating of historic load requirement, to be permitted
Perhaps scheduled error protection output level 206 is configured to the higher percent of minimum historic load requirement.
Similarly, scheduled error protection output level 206 can be based on history energy production output level.Scheduled failure
Protect output level 206 can be based on the average or minimum history energy production output water from any time described herein section
It is flat.In addition, scheduled error protection output level 206 can be configured to given time described herein or being averaged to the settled date
Or any percentage that minimum historic load requires.
The output valve of EG systems is declined and may include changing the photovoltaic inversion in photovoltaic DC-to-AC converter or multiple photovoltaic DC-to-AC converters
The electrical characteristics of device.In some implementations, output level decline can be spent 10 seconds to 10 minutes.Set rate can have than
The big mean size of the history fall off rate of same time in one day or between corresponding output level.In other words, in Fig. 2
Fall off rate can have the negative slope bigger than history fall off rate.For example, set rate can be in the minimum of output level per second
Between about 0.5% reduction and per second about 100%.Other possible set rates may include per second about 1% and every
Between second about 10%, between per second about 1% and per second about 5% and per second about 5% and per second about 10% it
Between.Set rate may not be constant, and can be changed based on the energy production output level of EG systems.Set rate can
To be the piecewise function for depending on self-sustaining active period and playing the past time or generating output level depending on present energy.
Scheduled rate function can there are two lines for tool between holding activity output level 204 and predetermined failure protection output level 206
Property part, three linear segments, four linear segments or more.
It can keep scheduled error protection output level 314.Method 300 may include determining whether processor 316 receives
Third control message.Third control message may include that the output level by EG systems is adjusted to the energy specified in third control message
Amount generates the instruction of output level.If processor receives third control message, this method may include by EG systems compared with
High level is adjusted to the energy production output level specified in third control message 318.
As shown in Figure 4, embodiment may include the method 400 for realizing the error protection output level of EG systems.Method 400
It may include receiving first control signal 402.First control signal may include the instruction for changing the output level of EG systems.At these
In other embodiment, the output level of EG systems can be adjusted to holding activity output level as described herein.It keeps living
Dynamic output level can be any energy production output level as described herein.
Method 400 may also include determining that whether receive second control signal during predetermined amount of time 404.If pre-
Second control signal is received during section of fixing time, then it is new defeated to may include that the output level by EG systems is adjusted to for method 400
Go out level 406.
If being not received by second control signal, method during the predetermined amount of time after first control signal
400 may include after predetermined time period declining output level with fall off rate, until realization error protection output level is
Only.Error protection output level can be higher than the first output level after first control signal, and in this case, decline
Rate is steep than the history fall off rate of the time in one day or between corresponding output level.When not occurring
When spending generation situation or when just there is excessive generation situation but loading demand is increasing, it may appear that this situation.Under
Reduction of speed rate can be any fall off rate described herein.Error protection output level can be described herein any pre-
Fixed error protection output level.
In embodiment, error protection output level can not be scheduled.Error protection output level may part by
Current weather condition determines.Can by the sensor with EG system electric couplings come measure current weather condition (for example, temperature,
Sun intensity).In these and other embodiments, error protection output level can be determined partly by the weather conditions predicted.
It can be based on the analysis of current weather condition (for example, wind speed, cloud layer, air pressure, humidity) come the situation of predicting the weather.Error protection
Output level will be different in the time in one day.And maintain error protection output level until receiving third control
Signal may include the error protection output level being adjusted to output level in whole day.Losing the communication period with control server
Between, error protection output level can be stored in can be by memory storage apparatus that EG systems access.For example, such as institute in Fig. 5
Show, memory storage apparatus can be a part for storage subsystem 506 or storage subsystem 506.By by output level tune
The error protection output level in the whole day stored is saved into, permissible EG systems safely execute, while changing in load requirement
While change, the approximate level of efficiency of whole day is kept.Can be spaced according to the regulation (including every 1 minute, it is 10 minutes every, 30 minutes every, every
1 hour, every 2 hours or 4 hours every) it is adjusted.Method 400, which may also include, maintains error protection output level, until receiving
Signal 410 is controlled to third.
Embodiment may include that distributed power generation manages system.The system may include gateway, control server and energy production
System.Controlling server can be located at any distance of distance EG systems.In some cases, control server can be with EG systems
At a distance of more than 5 miles, the distance more than 10 miles or more than 100 miles.In embodiment, EG systems may include photovoltaic panel and
Photovoltaic DC-to-AC converter.EG systems may include battery.In the embodiment of this technology, if EG systems be included in excessive generation situation and
The not full charge of battery of communication period is lost, then system can route more electric power to charge battery, rather than be sent out
It is sent to power grid.In these and other embodiments, EG systems may include from wind turbine, natural gas, solar energy, underground heat, biology
The power generation in matter or hydroelectric generation source.EG systems can carry out telecommunication with electricity grid network.Electricity grid network can be worked as by public utilities, municipal administration
Office or partner's operation.
EG systems can be configured to receive instruction from control server by gateway.Instruction may include for adjusting EG systems
Energy production output level instruction.If EG systems are not received by instruction within a predetermined period of time, EG systems can quilt
It is configured to that output level is dropped to scheduled error protection output level with fall off rate.EG systems may include that memory stores
Device.Fall off rate and scheduled error protection output level can be stored on memory storage apparatus.Realize these methods
Software may be mounted to that on inverter.The software may include storing the value in memory and timer, to assist declining.
Scheduled fall off rate can be set by different constraints, and can be based on when being not received by control message
Situation come to constraint paid the utmost attention to or adjusted.Fig. 5 shows similar with Fig. 2 before and after, during losing communication
EG system outputs and time curve graph.Such as Fig. 2, EG systems receive control message c0, control message c0Lead to EG systems
It is exported with initial output level 502.Two kinds of scenes are shown different from Fig. 2, Fig. 5, are had after the different control message of each leisure
There is different output level.In scene I, in control message c1Later, EG system outputs can be adjusted to holding activity output
Level 504.In scene II, in control message c1' after, EG system outputs can be adjusted to the holding lower than level 504 and live
Dynamic output level 506.During predetermined period, it is not received by subsequent control messages c2Or c2'.EG systems are designed to, and are made
It obtains scheduled fall off rate and is usually fixed at maximum size.After being not received by control message, in scene I, EG is defeated
Go out level with scheduled fall off rate 508 to decline, until reaching scheduled error protection output level 510.In scene II
In, EG output level is declined with scheduled fall off rate 508, until reaching scheduled error protection output level 510.
Because two kinds of scenes predetermined fall off rate all having the same and keep activity level 504 higher than keep movable water
Flat 506, so compared with second of scene, it is horizontal to reach scheduled error protection that the first scene needs the longer time
510.Scene I spends the time 512 to decline, and scene II spends the time 514 to decline.The embodiment of this technology may also include fair
Perhaps EG systems surmount scheduled fall off rate limitation or in some cases for other constraint-prioritized scheduled declines of consideration
The method of rate limit.For example, in scene I, if the time 512 be considered too long and more than the setting of some maximum time and
Reach scheduled error protection output level, then this method may include that guiding EG systems to reach scheduled failure in the time 514 protects
Protect output level 510.This profile that will lead to fall off rate 516 and illustrated with dotted line 518.
Fig. 6 shows other scenes that EG systems can be run under the constraints.As Fig. 5, Fig. 6 are shown with different holdings
Two kinds of scenes of activity level.In scene I, EG systems have holding activity output level 602.In scene II, EG systems
With the holding activity output level 604 lower than holding activity output level 602.Under both scenes, EG systems can be by about
Beam, to reach scheduled error protection output level 606 in the time 608.Because level 602 is higher than level 604, lower reduction of speed
Rate 610 is bigger than fall off rate 612.However, fall off rate 610 exports for being considered the safety for system or reliability
Reduction it is too steep.If it is, then EG systems can be in the pact for reaching scheduled error protection output level 606 in the time 608
Safety, reliability or other factors are paid the utmost attention to before beam.As a result, scene I can reduce output level with fall off rate 614,
Reach scheduled error protection output level 606 in the time 616.
The embodiment of this technology may include the multiple EG systems being connect with utility network.Fig. 7 A, Fig. 7 B and Fig. 7 C are instantiated
How one EG system can prevent from excessively generating the example of situation with another EG system interaction.In fig. 7, energy
It generates and storage (EGS) system 702 is connect with energy production (EG) system 704.EGS systems 702 can with describe before
The EGS systems of server (not shown) normal communication are controlled as any control server category and/or EGS systems 702 may include
It is programmed with method as described in the present disclosure to reach predetermined failure in the case where losing the communication with control server
Protect the device of output level.EG systems can be without the device that is programmed with these methods.EGS systems 702 and EG systems 704 2
Person connect with power grid 706.Both EGS systems 702 and EG systems 704 can generate the energy more than load requirement.EGS systems 702
The excess energy indicated by arrow 708 can be generated, and EG systems 704 can generate the excess energy indicated by arrow 710.Such as arrow
712 and arrow 714 represented by excess energy be sent to power grid 706.
Excess energy, which is sent to power grid 706, can lead to excessive generation situation.In figure 7b, EGS systems 702 can stop producing
Raw energy generates situation to avoid excessive.However, output level is not dropped to scheduled error protection output level
In the case of method, EG systems 704 still can generate energy as indicated by arrow 716, and by energy as indicated by an arrow 718
It is sent to power grid 706.As a result, although EGS systems 702 do not generate excess energy, this scene, which still results in, excessively generates shape
Condition.
Fig. 7 C instantiate the possibility embodiment of this technology that can solve the problems in Fig. 7 B.Such as Fig. 7 B, EG systems 704 can
Excess energy is generated, as shown in arrow 720.EGS systems 702 its predetermined failure level of protection can be arranged to charge power value and
Non-power output level.As a result, being lost with after the communication of control server in EGS systems 702, EGS systems 702 can be used such as
Excess energy shown in arrow 722 charges to its battery.EGS systems 702 are served as the absorber of EG systems 704 and are prevented
Excessively generate situation.
System architecture
Fig. 8 is the simplified block diagram of computer system 800 according to an embodiment of the invention.Computer system 800 can be used for
Realize the computer systems/devices described relative to Fig. 1 (for example, site gateway 124, control server 128, third party's service
Any of device 130).As shown in Figure 8, computer system 800 may include via bus subsystem 804 and multiple peripheral equipments
Set the one or more processors 802 of communication.These peripheral units may include (including the memory sub-system of storage subsystem 806
808 and file storage subsystem 810), user interface input unit 812, user interface output device 814 and network interface subsystem
System 816.
Internal bus subsystem 804 can provide for allow computer system 800 various components and subsystem on demand each other
The mechanism of communication.Although internal bus subsystem 804 is shown schematically as single bus, the replacement of bus subsystem is real
Multiple bus can be utilized by applying example.
Network interface subsystem 816 can be used as in computer system 800 and other computer systems or network (for example, Fig. 1
Network 126) between transmit data interface.The embodiment of network interface subsystem 816 may include wireline interface (for example, with
Too net, CAN, RS232, RS485 etc.) or wireless interface (for example, ZigBee, Wi-Fi, honeycomb etc.).
User interface input unit 812 may include keyboard, pointing device (for example, mouse, trace ball, touch tablet etc.), sweep
Instrument, barcode scanner, assembly touch screen in the display, voice input device are retouched (for example, speech recognition system, Mike
Wind etc.) and other kinds of input unit.In general, being intended to include calculating for entering information into using term " input unit "
The device and mechanism of be possible to type in machine system 800.
User interface output device 814 may include display subsystem, printer, facsimile machine or such as audio output device
Non-vision display etc..Display subsystem can be cathode-ray tube (CRT), such as board device of liquid crystal display (LCD),
Or projection arrangement.In general, being intended to include the institute for exporting the information from computer system 800 using term " output device "
It is possible that the device and mechanism of type.
Storage subsystem 806 may include memory sub-system 808 and file/disk storage subsystem 810.808 He of subsystem
810 indicate that can store the program code for the function of providing the embodiment of the present invention and/or the non-transient computer of data readable deposits
Storage media.
Memory sub-system 808 may include multiple memories, including be used for store instruction and data during program executes
Main random access memory (RAM) (RAM) 818 and storage fixed instruction read-only memory (ROM) 820.File storage subsystem
810 can provide lasting (that is, non-volatile) storage for program and data files, and may include the driving of magnetic or solid state disk
Device, optical drive are together with associated removable medium (for example, CD-ROM, DVD, Blu-Ray etc.), movably based on flash memory
Driver or card, and/or other kinds of storage medium known in the art.
Processor 802 can be the processor of receiving control message in method for being described herein.In these feelings
Under condition, part or all of processor 802 and computer system 800 can be with EG system telecommunications.For example, processor 802 can
With 106 telecommunication of PV inverters.Scheduled error protection output level and fall off rate can be stored in storage subsystem 806
It is interior.The information can be stored with table or database format.The information can be stored as having certain input variables (for example,
Day in 1 year, the time in one day, weather conditions) mathematical formulae.
In these and other embodiments, processor 802 can send control message to EG systems.For example, 802 He of processor
Part or all of computer system 800 can control a part for server 128.In embodiment, web browser UI
180 can be apparent on user interface output device 814.In some embodiments, site gateway 124 may include computer system
Some or all of 800.
Computer system 800 is illustrative, it is not intended to limit the embodiment of this technology.With than system more than 800 or few
Many other configurations of component be possible.Computer system 800 and can be benefited from the various assemblies telecommunication of Fig. 1
The disclosure those skilled in the art will recognize that these configure.
In description in front, for purposes of illustration, numerous details are elaborated, in order to provide to each of this technology
The understanding of kind embodiment.It is apparent, however, to one skilled in the art, that can be in without these details some or
Person puts into practice some embodiments in the case where there is additional detail.
Several embodiments have been described, those skilled in the art will recognize that, do not departing from the spirit of the present invention
In the case of, various modifications form, alternative constructions and equivalent can be used.In addition, in order to avoid unnecessarily obscuring the present invention, and
Multiple well known processing and element are not described.In addition, the details of any specific embodiment can not always exist in the embodiment
Modification in, or other embodiment can be added to.
In the case where providing a series of values, it is understood that also specifically disclose every between the upper and lower bound of the range
It is a to be worth between two parties to 1/10th of lower limit unit (unless context clearly dictates otherwise).Cover any institute in the range
State any other described or each smaller range between value between two parties in value or between two parties value and the range.These smaller models
The upper and lower bound enclosed can be individually included within the scope of this or exclude outside the range, and any one limit, no one
A limit or the two limit are included in each range in smaller range and are also included within the present invention, are subjected to the range
Interior any given row removes the limit.Further include that exclusion is included if the range includes one or both of limit
The range of one or both of these limitations.
As herein and used in appended claims, singulative " one ", "an" and "the" refer to including plural number
Show object, unless the context clearly determines otherwise.Thus, for example, referring to that " a kind of method " includes a variety of such methods and right
The reference of " EG systems " includes the reference etc. to one or more EG systems well known by persons skilled in the art and its equivalent.It is existing
For purposes of clarity and understanding, the present invention is being described in detail now.It will be appreciated, however, that in appended claims
Certain changes and modification can be put into practice in the range of book.
Claims (17)
1. a kind of method for distributed generation system, the method includes：
First control signal is received at processor, the first control signal includes for by the energy volume production of energy production system
Raw output level is adjusted to the instruction of the first energy production output level；
The energy production output level of the energy production system is maintained the first energy production output level to reach
Certain period of time；
Determine whether receive second control signal during the period by the processor, wherein the second control letter
Number include the instruction for adjusting the energy production output level；And
If being not received by second control signal during the period：(i) make the energy after the period
It generates output level with given pace to decline, until reaching scheduled error protection output level, and (ii) maintains institute
Error protection output level is stated, signal is controlled until the processor receives third,
The wherein described error protection output level is based on historic load requirement.
2. according to the method described in claim 1, wherein, the period is between 3 seconds and 10 seconds.
3. according to the method described in claim 1, wherein, the energy production system includes photovoltaic DC-to-AC converter, and making described
The decline of energy production output level includes the electrical characteristics for changing the photovoltaic DC-to-AC converter.
4. according to the method described in claim 1, wherein, the energy production system includes multiple photovoltaic DC-to-AC converters, and is made
It includes the electrical characteristics for changing a photovoltaic DC-to-AC converter in the multiple photovoltaic DC-to-AC converter that the energy production output level, which declines,.
5. according to the method described in claim 1, wherein, the first energy production output level makes the energy production system
It can be matched with corresponding load requirement during excessive generation situation, and when the energy production system is generated than corresponding
There is the excessive generation situation when the big power of load requirement.
6. according to the method described in claim 1, wherein, the first energy production output level makes the energy production system
And the energy production system can be worked as during excessive generation situation with the matching of the sum of corresponding load requirement and additional margin
There is the excessive generation situation when generating the power bigger than the sum of the corresponding load requirement and the additional margin in system.
7. according to the method described in claim 1, wherein, the average value of the rate be more than one day in the same time history
Fall off rate.
8. according to the method described in claim 1, wherein, the error protection output level is based on the time in one day
Historic load requirement.
9. according to the method described in claim 1, wherein, energy production of the rate based on the energy production system exports
It is horizontal and change.
10. according to the method described in claim 1, wherein, the energy production output level is dropped to the error protection
The time that output level is spent is between 10 seconds to 10 minutes.
11. according to the method described in claim 1, further including：
Third is received at the processor and controls signal, and third control signal includes for by the energy production system
Energy production output level adjust to the second energy production output level instruction；And
The energy production output level of the energy production system is adjusted to the second energy production output level.
12. according to the method described in claim 1, wherein, before the first control signal is received at the processor,
The energy production output level of the energy production system is in the second energy production output level, and second energy production is defeated
Go out horizontal unequal with the first energy production output level.
13. according to the method described in claim 1, wherein, the energy production system is one in multiple energy production systems
A energy production system, and the method further includes：
The gross energy of the multiple energy production system generation output level is maintained into the first gross energy in the period
Generate output level；
If being not received by the second control signal during the period：(i) make after the period described
Gross energy is generated output level and is declined with the rate, and the total failare until reaching the multiple energy production system protects output
Until level, and (ii) maintains the total failare to protect output level, until the processor receives the third control
Until signal.
14. a kind of losing for the energy production system that a part in response to as distributed generation system is connect with energy grid is logical
The method of letter, the method includes：
While the energy production system is with control network normal communication, in the processing coupled with the energy production system
With predetermined space receiving control message at device；
Based on the first control message, the energy production output of the energy production system is arranged to first level；
Then, receive the second control message at the processor, second control message include for by it is described can volume production
The energy production output level of raw system is adjusted to the second horizontal instruction；
It is horizontal that the energy production output level of the energy production system is maintained described second；And
If be not received by the predetermined space after second control message including adjusting the energy production
The third control message of the instruction of the energy production output level of system：
Determine the communication lost with the control network；
The energy production output level is decreased to scheduled error protection output level, wherein the error protection exports water
It is flat be based on historic load requirement, and
The error protection output level is maintained, until having re-created with the communication for controlling network and by the processing
Until device receives for changing the 4th control message of the energy production output level.
15. according to the method for claim 14, wherein the predetermined space is between 3 seconds and 10 seconds.
16. according to the method for claim 14, wherein the energy production output level is decreased to the error protection
Output level includes that the energy production output level is made to decline with given pace, until reaching the error protection output level
Until.
17. according to the method for claim 14, wherein it is horizontal that the error protection output level is more than described second.
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| US14/697,353 US9811064B2 (en) | 2015-04-27 | 2015-04-27 | Energy generation (EG) system generating failsafe level of energy in case of communication failure |
| US14/697,353 | 2015-04-27 | ||
| PCT/US2016/027431 WO2016176047A1 (en) | 2015-04-27 | 2016-04-14 | Failsafe power profile for a distributed generation management system |
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| CN107534299B true CN107534299B (en) | 2018-10-19 |
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| CN201680024663.4A Active CN107534299B (en) | 2015-04-27 | 2016-04-14 | The error protection power configuration of system is managed for distributed power generation |
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